<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: 13569
  Date: 2021/3/17
  Time: 15:40
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--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>

    <title>首页</title>
    <meta charset="utf-8">
    <script src="echart/echarts.min.js"></script>
    <link rel="stylesheet" href="layui/css/layui.css">
    <script src="layui/layui.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div style="font-size:34px;width: 100%;background-color: #FFFCF5;color: slategrey" >欢迎${sessionScope.user.username}使用图书系统</div>


<div id="main" style="width: 1000px;height:600px;margin:0 auto"></div>

<script type="text/javascript">

    var chartDom = document.getElementById('main');
    var myChart = echarts.init(chartDom);
    var option;

    option = {
        series: [{
            name: 'hour',
            type: 'gauge',
            startAngle: 90,
            endAngle: -270,
            min: 0,
            max: 12,
            splitNumber: 12,
            axisLine: {
                lineStyle: {
                    width: 15,
                    color: [
                        [1, 'rgba(0,0,0,0.7)']
                    ],
                    shadowColor: 'rgba(0, 0, 0, 0.5)',
                    shadowBlur: 15
                }
            },
            splitLine: {
                lineStyle: {
                    shadowColor: 'rgba(0, 0, 0, 0.3)',
                    shadowBlur: 3,
                    shadowOffsetX: 1,
                    shadowOffsetY: 2
                }
            },
            axisLabel: {
                fontSize: 50,
                distance: 25,
                formatter: function (value) {
                    if (value === 0) {
                        return '';
                    }
                    return value;
                }
            },
            anchor: {
                show: true,
                icon: 'path://M532.8,70.8C532.8,70.8,532.8,70.8,532.8,70.8L532.8,70.8C532.7,70.8,532.8,70.8,532.8,70.8z M456.1,49.6c-2.2-6.2-8.1-10.6-15-10.6h-37.5v10.6h37.5l0,0c2.9,0,5.3,2.4,5.3,5.3c0,2.9-2.4,5.3-5.3,5.3v0h-22.5c-1.5,0.1-3,0.4-4.3,0.9c-4.5,1.6-8.1,5.2-9.7,9.8c-0.6,1.7-0.9,3.4-0.9,5.3v16h10.6v-16l0,0l0,0c0-2.7,2.1-5,4.7-5.3h10.3l10.4,21.2h11.8l-10.4-21.2h0c6.9,0,12.8-4.4,15-10.6c0.6-1.7,0.9-3.5,0.9-5.3C457,53,456.7,51.2,456.1,49.6z M388.9,92.1h11.3L381,39h-3.6h-11.3L346.8,92v0h11.3l3.9-10.7h7.3h7.7l3.9-10.6h-7.7h-7.3l7.7-21.2v0L388.9,92.1z M301,38.9h-10.6v53.1H301V70.8h28.4l3.7-10.6H301V38.9zM333.2,38.9v10.6v10.7v31.9h10.6V38.9H333.2z M249.5,81.4L249.5,81.4L249.5,81.4c-2.9,0-5.3-2.4-5.3-5.3h0V54.9h0l0,0c0-2.9,2.4-5.3,5.3-5.3l0,0l0,0h33.6l3.9-10.6h-37.5c-1.9,0-3.6,0.3-5.3,0.9c-4.5,1.6-8.1,5.2-9.7,9.7c-0.6,1.7-0.9,3.5-0.9,5.3l0,0v21.3c0,1.9,0.3,3.6,0.9,5.3c1.6,4.5,5.2,8.1,9.7,9.7c1.7,0.6,3.5,0.9,5.3,0.9h33.6l3.9-10.6H249.5z M176.8,38.9v10.6h49.6l3.9-10.6H176.8z M192.7,81.4L192.7,81.4L192.7,81.4c-2.9,0-5.3-2.4-5.3-5.3l0,0v-5.3h38.9l3.9-10.6h-53.4v10.6v5.3l0,0c0,1.9,0.3,3.6,0.9,5.3c1.6,4.5,5.2,8.1,9.7,9.7c1.7,0.6,3.4,0.9,5.3,0.9h23.4h10.2l3.9-10.6l0,0H192.7z M460.1,38.9v10.6h21.4v42.5h10.6V49.6h17.5l3.8-10.6H460.1z M541.6,68.2c-0.2,0.1-0.4,0.3-0.7,0.4C541.1,68.4,541.4,68.3,541.6,68.2L541.6,68.2z M554.3,60.2h-21.6v0l0,0c-2.9,0-5.3-2.4-5.3-5.3c0-2.9,2.4-5.3,5.3-5.3l0,0l0,0h33.6l3.8-10.6h-37.5l0,0c-6.9,0-12.8,4.4-15,10.6c-0.6,1.7-0.9,3.5-0.9,5.3c0,1.9,0.3,3.7,0.9,5.3c2.2,6.2,8.1,10.6,15,10.6h21.6l0,0c2.9,0,5.3,2.4,5.3,5.3c0,2.9-2.4,5.3-5.3,5.3l0,0h-37.5v10.6h37.5c6.9,0,12.8-4.4,15-10.6c0.6-1.7,0.9-3.5,0.9-5.3c0-1.9-0.3-3.7-0.9-5.3C567.2,64.6,561.3,60.2,554.3,60.2z',
                showAbove: false,
                offsetCenter: [0, '-35%'],
                size: 120,
                keepAspect: true,
                itemStyle: {
                    color: '#707177'
                }
            },
            pointer: {
                icon: 'path://M2.9,0.7L2.9,0.7c1.4,0,2.6,1.2,2.6,2.6v115c0,1.4-1.2,2.6-2.6,2.6l0,0c-1.4,0-2.6-1.2-2.6-2.6V3.3C0.3,1.9,1.4,0.7,2.9,0.7z',
                width: 12,
                length: '55%',
                offsetCenter: [0, '8%'],
                itemStyle: {
                    color: '#C0911F',
                    shadowColor: 'rgba(0, 0, 0, 0.3)',
                    shadowBlur: 8,
                    shadowOffsetX: 2,
                    shadowOffsetY: 4
                }
            },
            detail: {
                show: false
            },
            title: {
                offsetCenter: [0, '30%']
            },
            data: [{
                value: 0
            }]
        },
            {
                name: 'minute',
                type: 'gauge',
                startAngle: 90,
                endAngle: -270,
                min: 0,
                max: 60,
                axisLine: {
                    show: false
                },
                splitLine: {
                    show: false
                },
                axisTick: {
                    show: false
                },
                axisLabel: {
                    show: false
                },
                pointer: {
                    icon: 'path://M2.9,0.7L2.9,0.7c1.4,0,2.6,1.2,2.6,2.6v115c0,1.4-1.2,2.6-2.6,2.6l0,0c-1.4,0-2.6-1.2-2.6-2.6V3.3C0.3,1.9,1.4,0.7,2.9,0.7z',
                    width: 8,
                    length: '70%',
                    offsetCenter: [0, '8%'],
                    itemStyle: {
                        color: '#C0911F',
                        shadowColor: 'rgba(0, 0, 0, 0.3)',
                        shadowBlur: 8,
                        shadowOffsetX: 2,
                        shadowOffsetY: 4
                    }
                },
                anchor: {
                    show: true,
                    size: 20,
                    showAbove: false,
                    itemStyle: {
                        borderWidth: 15,
                        borderColor: '#C0911F',
                        shadowColor: 'rgba(0, 0, 0, 0.3)',
                        shadowBlur: 8,
                        shadowOffsetX: 2,
                        shadowOffsetY: 4
                    }
                },
                detail: {
                    show: false
                },
                title: {
                    offsetCenter: ['0%', '-40%']
                },
                data: [{
                    value: 0
                }]
            },
            {
                name: 'second',
                type: 'gauge',
                startAngle: 90,
                endAngle: -270,
                min: 0,
                max: 60,
                animationEasingUpdate: 'bounceOut',
                axisLine: {
                    show: false
                },
                splitLine: {
                    show: false
                },
                axisTick: {
                    show: false
                },
                axisLabel: {
                    show: false
                },
                pointer: {
                    icon: 'path://M2.9,0.7L2.9,0.7c1.4,0,2.6,1.2,2.6,2.6v115c0,1.4-1.2,2.6-2.6,2.6l0,0c-1.4,0-2.6-1.2-2.6-2.6V3.3C0.3,1.9,1.4,0.7,2.9,0.7z',
                    width: 4,
                    length: '85%',
                    offsetCenter: [0, '8%'],
                    itemStyle: {
                        color: '#C0911F',
                        shadowColor: 'rgba(0, 0, 0, 0.3)',
                        shadowBlur: 8,
                        shadowOffsetX: 2,
                        shadowOffsetY: 4
                    }
                },
                anchor: {
                    show: true,
                    size: 15,
                    showAbove: true,
                    itemStyle: {
                        color: '#C0911F',
                        shadowColor: 'rgba(0, 0, 0, 0.3)',
                        shadowBlur: 8,
                        shadowOffsetX: 2,
                        shadowOffsetY: 4
                    }
                },
                detail: {
                    show: false
                },
                title: {
                    offsetCenter: ['0%', '-40%']
                },
                data: [{
                    value: 0
                }]
            }]
    };

    var timeUpdatedStatus = {
        second: false,
        minute: false,
        hour: false
    };

    function updateSeries(time, series, type) {
        var isCritical = (Math.floor(time) === 0) || (type === 'second' && time === 1);
        if (isCritical && timeUpdatedStatus[type] === true) {
            timeUpdatedStatus[type] = false;
            series.data[0].value = 0;
            series.clockwise = true;
            option.animationDurationUpdate = 0;
            myChart.setOption(option, true);
        }
        series.data[0].value = time;
        series.clockwise = true;
        if (time === 0) {
            timeUpdatedStatus[type] = true;
            series.clockwise = false;
        }
    }

    setInterval(function () {
        var date = new Date();
        var second = date.getSeconds();
        var minute = date.getMinutes() + second / 60;
        var hour = date.getHours() % 12 + minute / 60;

        updateSeries(second, option.series[2], 'second');
        updateSeries(minute, option.series[1], 'minute');
        updateSeries(hour, option.series[0], 'hour');

        option.animationDurationUpdate = 300;
        myChart.setOption(option, true);
        date = null;
    }, 1000);

    option && myChart.setOption(option);

</script>
</body>
</html>
